Isolation, structure elucidation and antibacterial activities of streptothricin acids.

Ji Z; Wang M; Wei S; Zhang J; Wu W

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Isolation, structure elucidation and antibacterial activities of streptothricin acids.

机译：串硝基锡的分离，结构阐明及抗菌活性。

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Five streptothricin acids (compounds 1-5) were isolated by ion-exchange resin chromatography and preparative RP-HPLC from the fermentation broth of Streptomyces qinlingensis. Their structures were elucidated mainly by analyses of the IR, HR-EIS-MS and NMR spectral data. They were deduced as two known compounds, streptothricin F acid (1) and streptothricin D acid (2), and three new compounds, 12-carbamoylstreptothricin E acid (3), 12-carbamoylstreptothricin D acid (4) and N-acetyl-streptothricin D acid (5), respectively. The antibacterial activities of 1-5 against Escherichia coli, Bacillus subtilis, Staphylococcus aureus, Bacillus cereus and Pseudomonas aeruginosa were assayed by micro-broth dilution. Comparison of the MICs with streptothricin F and D showed that the antimicrobial activities of 1-5 were decreased significantly but varied with the structures.

机译：通过离子 - 交换树脂色谱法分离五种链脲素酸（化合物1-5），并从链霉菌的发酵肉汤中的制备型RP-HPLC分离。它们的结构主要通过IR，HR-EIS-MS和NMR光谱数据分析来阐明。它们被推导为两种已知的化合物，链孢菌素F酸（1）和链孢菌蛋白D酸（2），以及三种新化合物，12-氨基甲酰基磺霉素E酸（3），12-氨基酰·妥素D酸（4）和N-乙酰基 - 链菌序列分别为酸（5）。通过微肉汤稀释测定1-5次对抗大肠杆菌，芽孢杆菌，金黄色葡萄球菌，芽孢杆菌和假单胞菌的抗菌活性。用链霉素F和D的麦克风的比较表明，1-5的抗微生物活性显着下降，但结构变化。

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《The Journal of Antibiotics: An International Journal》 |2009年第5期|共5页
作者
Ji Z; Wang M; Wei S; Zhang J; Wu W;
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Institute of Pesticide Science Northwest Agricultural and Forestry University Shaanxi China.;

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正文语种 eng
中图分类药学;
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Isolation, structure elucidation and antibacterial activities of streptothricin acids.

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